Morteza Zihayat

2026

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When Attention Becomes Exposure in Generative Search.
Shayan Alipour|Mehdi Kargar|Morteza Zihayat
Advances in Information Retrieval - 48th European Conference on Information Retrieval, ECIR 2026, Delft, The Netherlands, March 29 - April 2, 2026, Proceedings, Part III
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Failing Forward: Understanding Query Failure in Retrieval, Judgment, and Generation.
Ralf Krestel|Mohammad Hossein Saliminabi|Seyed Mohammad Hosseini|Dimitrios Androutsos|Hidir Aras|Negar Arabzadeh|Ralf Krestel|Mohammad Hossein Saliminabi|Dimitrios Androutsos|Hidir Aras|Florina Piroi|Morteza Zihayat|Florina Piroi|Morteza Zihayat|Allan Hanbury|Ebrahim Bagheri|Ebrahim Bagheri|Allan Hanbury
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Refairmulate: A Large-Scale Dataset for Gender-Fair Query Reformulations.
Hai Son Le|Shirin Seyedsalehi|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the 49th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2026, MelbourneVICAustralia, July 20-24, 2026
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Self-Paced Fair Ranking with Loss as a Proxy for Bias.
Shirin Seyedsalehi|Hai Son Le|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the Nineteenth ACM International Conference on Web Search and Data Mining, WSDM 2026, Boise, ID, USA, February 22-26, 2026
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Graph Poisoning for Node Rank Manipulation.
Seyed Mohammad Hosseini|Radin Hamidi Rad|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.
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Decentralized in Name Only: The Centralization of DAO Labor.
Lingling Zhang|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the ACM Web Conference 2026, WWW 2026, Dubai, United Arab Emirates, originally scheduled for April 13-17, 2026, rescheduled for June 29 - July 3, 2026.

2025

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Understanding and Mitigating Gender Bias in Information Retrieval Systems.
Shirin Seyedsalehi|Amin Bigdeli|Negar Arabzadeh|Batool AlMousawi|Zack Marshall|Morteza Zihayat|Ebrahim Bagheri
Foundations and Trends in Information Retrieval 2025 Volume 19 Issue 3
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Datasets for Supervised Adversarial Attacks on Neural Rankers.
Amir Khosrojerdi|Amin Bigdeli|Radin Hamidi Rad|Morteza Zihayat|Charles L. A. Clarke|Ebrahim Bagheri
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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LLM-as-a-Judge in Entity Retrieval: Assessing Explicit and Implicit Relevance.
Mohammad Hossein Saliminabi|Negar Arabzadeh|Seyed Mohammad Hosseini|Dimitrios Androutsos|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the 34th ACM International Conference on Information and Knowledge Management, CIKM 2025, Seoul, Republic of Korea, November 10-14, 2025
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Benchmarking Prompt Sensitivity in Large Language Models.
Amir Hossein Razavi|Mina Soltangheis|Negar Arabzadeh|Sara Salamat|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 47th European Conference on Information Retrieval, ECIR 2025, Lucca, Italy, April 6-10, 2025, Proceedings, Part III
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Bias-Aware Curriculum Sampling For Fair Ranking.
Shirin Seyedsalehi|Hai Son Le|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2025, Padua, Italy, July 13-18, 2025

2024

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Enhanced Retrieval Effectiveness through Selective Query Generation.
Seyed Mohammad Hosseini|Negar Arabzadeh|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the 33rd ACM International Conference on Information and Knowledge Management, CIKM 2024, Boise, ID, USA, October 21-25, 2024

2023

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Neural Disentanglement of Query Difficulty and Semantics.
Sara Salamat|Negar Arabzadeh|Shirin Seyedsalehi|Amin Bigdeli|Morteza Zihayat|Ebrahim Bagheri
Proceedings of the 32nd ACM International Conference on Information and Knowledge Management, CIKM 2023, Birmingham, United Kingdom, October 21-25, 2023
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De-biasing Relevance Judgements for Fair Ranking.
Amin Bigdeli|Negar Arabzadeh|Shirin Seyedsalehi|Bhaskar Mitra|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part II
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Don't Raise Your Voice, Improve Your Argument: Learning to Retrieve Convincing Arguments.
Sara Salamat|Negar Arabzadeh|Amin Bigdeli|Shirin Seyedsalehi|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part II
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Learning Query-Space Document Representations for High-Recall Retrieval.
Sara Salamat|Negar Arabzadeh|Fattane Zarrinkalam|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part II
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Understanding and Mitigating Gender Bias in Information Retrieval Systems.
Amin Bigdeli|Negar Arabzadeh|Shirin Seyedsalehi|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part III

2022

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A Light-Weight Strategy for Restraining Gender Biases in Neural Rankers.
Amin Bigdeli|Negar Arabzadeh|Shirin Seyedsalehi|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part II
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Gender Fairness in Information Retrieval Systems.
Amin Bigdeli|Negar Arabzadeh|Shirin Seyedsalehi|Morteza Zihayat|Ebrahim Bagheri
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022
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Addressing Gender-related Performance Disparities in Neural Rankers.
Shirin Seyedsalehi|Amin Bigdeli|Negar Arabzadeh|Morteza Zihayat|Ebrahim Bagheri
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

2021

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Matches Made in Heaven: Toolkit and Large-Scale Datasets for Supervised Query Reformulation.
Junseok Park|Negar Arabzadeh|Shirin Seyedsalehi|Amin Bigdeli|Alexander Schill|Morteza Zihayat|Ebrahim Bagheri|Sungji Choo|Junseok Park|Shirin Seyedsalehi|Alexander Schill|Morteza Zihayat|Ebrahim Bagheri|Sungji Choo
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021
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Collaborative Experts Discovery in Social Coding Platforms.
Roohollah Etemadi|Morteza Zihayat|Kuan Feng|Jason Adelman|Ebrahim Bagheri
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021
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OpenAttHetRL: An Open Source Toolkit for Attributed Heterogeneous Network Representation Learning.
Roohollah Etemadi|Morteza Zihayat|Kuan Feng|Jason Adelman|Ebrahim Bagheri
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021
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RW-Team: Robust Team Formation using Random Walk.
John Nemec|Heidar Davoudi|Lukasz Golab|Mehdi Kargar|Yuliya Lytvyn|Piotr Mierzejewski|Jaroslaw Szlichta|Morteza Zihayat
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021
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Query Performance Prediction Through Retrieval Coherency.
Negar Arabzadeh|Amin Bigdeli|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II
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Exploring Gender Biases in Information Retrieval Relevance Judgement Datasets.
Amin Bigdeli|Negar Arabzadeh|Morteza Zihayat|Ebrahim Bagheri
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II
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On the Orthogonality of Bias and Utility in Ad hoc Retrieval.
Amin Bigdeli|Negar Arabzadeh|Shirin Seyedsalehi|Morteza Zihayat|Ebrahim Bagheri
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

2020

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Compact group discovery in attributed graphs and social networks.
Abeer Khan|Lukasz Golab|Mehdi Kargar|Jaroslaw Szlichta|Morteza Zihayat
Information Processing and Management 2020 Volume 57 Issue 2
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Robust keyword search in large attributed graphs.
Spencer Bryson|Heidar Davoudi|Lukasz Golab|Mehdi Kargar|Yuliya Lytvyn|Piotr Mierzejewski|Jaroslaw Szlichta|Morteza Zihayat
Discover Computing 2020 Volume 23 Issue 5